Abstract

The efficiency with which various microscope objectives and custom lenses collimate laser diode emission has been measured. Throughput efficiencies for diode operation above and below threshold are presented.

© 1985 Optical Society of America

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Figures (3)

Fig. 1
Fig. 1

Power–current (PI) relationship for laser diode source, RCA C86014E.

Fig. 2
Fig. 2

Collimating throughput efficiency vs laser bias current for various objectives.

Fig. 3
Fig. 3

Collimating throughput efficiency vs laser bias current for various custom lenses.

Tables (2)

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Table I Optical Characteristics of Objectives and Custom Lenses Tested

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Table II Microscope Objective and Custom Lens Collimating Throughput Efficiencies for Laser Diode Operation Above and Below Lasing Threshold

Equations (2)

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θ 11 12 ° θ 1 36 ° .
N . A . 11 0 . 105 N . A . 1 0 . 309 .

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